/*******************************************************************************
 * Copyright 2018 The MIT Internet Trust Consortium
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/

package org.mitre.openid.connect.service.impl;

import org.mitre.openid.connect.service.LoginHintExtracter;

import com.google.common.base.Strings;

/**
 * Passes login hints that don't start with "http"
 *
 * @author jricher
 *
 */
public class RemoveLoginHintsWithHTTP implements LoginHintExtracter {

	/* (non-Javadoc)
	 * @see org.mitre.openid.connect.service.LoginHintTester#useHint(java.lang.String)
	 */
	@Override
	public String extractHint(String loginHint) {
		if (Strings.isNullOrEmpty(loginHint)) {
			return null;
		} else {
			if (loginHint.startsWith("http")) {
				return null;
			} else {
				return loginHint;
			}
		}
	}

}
